<template>
 <div>
    <!-- 面包屑导航 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
        <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
        <el-breadcrumb-item>商品管理</el-breadcrumb-item>
        <el-breadcrumb-item>商品列表</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡片视图区域 -->
    <el-card>
        <el-row gutter="20">
            <el-col :span="8">
                 <el-input placeholder="请输入内容" v-model="queryInfo.query" 
                 clearable @clear="getGoodsList">
                    <el-button slot="append" icon="el-icon-search"
                    @click="getGoodsList" ></el-button>
                </el-input>
            </el-col>
            <el-col :span="4">
                <el-button type="primary" @click="goAddPage">添加商品</el-button>
            </el-col>
        </el-row>

        <!-- table 表格区域 -->
        <el-table :data="goodslist" border stripe>
            <el-table-column type="index" label="序号">
            </el-table-column>
            <el-table-column label="商品名称" 
            prop="goods_name"> 
            </el-table-column>
            <el-table-column label="商品价格（元）" 
            prop="goods_price" width="90px">
            </el-table-column>
            <el-table-column label="商品重量" 
            prop="goods_weight" width="70px">
            </el-table-column>
            <el-table-column label="创建时间" 
            prop="add_time" width="140px">
                <template slot-scope="scope">
                    {{scope.row.add_time | dateFormat}}
                </template>
            </el-table-column>
            <el-table-column label="操作" width="130px">
                <template slot-scope="scope">
                    <el-button type="primary" icon="el-icon-edit"
                    size="mini"></el-button>
                    <el-button type="danger" icon="el-icon-delete"
                    size="mini" @click="removeById(scope.row.goods_id)"></el-button>
                </template>
            </el-table-column>
        </el-table>

        <!-- 分页区域 -->
        <el-pagination
            @size-change="handleSizeChange"
            @current-change="handleCurrentChange"
            :current-page="queryInfo.pagenum"
            :page-sizes="[10, 20, 30, 50]"
            :page-size="queryInfo.pagesize"
            layout="total, sizes, prev, pager, next, jumper"
            :total="total" background>
        </el-pagination>
    </el-card>
 </div>
</template>
<script>
 export default {
     data(){
         return{
             //查询参数对象
             queryInfo:{
                 query:'',
                 pagenum:1,
                 pagesize:10
             },
             goodslist:[],
             total:0
         }
        
     },
     created() {
             this.getGoodsList()
         },
     methods: {
            //根据分页获取对应的商品列表
            async getGoodsList(){
                const {data:res}=await this.$http.get('goods',{params:this.queryInfo})
                if(res.meta.status!==200){
                     this.$message.error('获取商品列表失败')
                }
                
                console.log(res.data)
                this.goodslist =res.data.goods
                this.total=res.data.total
             },
             handleSizeChange(newSize){
                 this.queryInfo.pagesize=newSize
                 this.getGoodsList()
             },
             handleCurrentChange(newPage){
                 this.queryInfo.pagenum=newPage
                 this.getGoodsList()
             },
             async removeById(id){
                 const confirmResult =await this.$confirm('此操作将永久删除该商品, 是否继续?', 
                '提示', 
                {
                    confirmButtonText: '确定',
                    cancelButtonText: '取消',
                    type: 'warning'
                }
                ).catch(err=>err)
                //用户确认删除，返回值未字符串confirm
                //用户取消删除，返回字符串cancel
                if(confirmResult!=='confirm'){
                    return this.$message.info('已取消删除')
                }
                const {data:res} = await this.$http.delete(`goods/${id}`)
                if(res.meta.status !==200){
                    return this.$message.error('删除失败！')
                }
                this.$message.success('删除成功！')
                this.getGoodsList()  
             },
             goAddPage(){
                 this.$router.push('/goods/add')
             }

        }
 }
 </script>
<style lang="less"   scoped>
</style>